Case of battery, battery, power consumption device, and method and device for producing battery

ABSTRACT

Embodiments of the present application provide a case for a battery, a battery, a power consumption device, and a method and device for producing a battery. The case includes: a thermal management component configured to adjust temperature of a battery cell accommodated in the case; a first wall provided with a through hole, the through hole being configured to communicate a gas inside and outside the case; and a condensing component attached to the thermal management component, the condensing component being configured to shield the through hole so as to condense a gas flowing into the inside of the case through the through hole. According to the technical solutions of the embodiments of the present application, the safety of the battery can be enhanced.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a continuation of International Application No.PCT/CN2020/121991, filed on Oct. 19, 2020, the disclosure of which ishereby incorporated by reference in its entirety.

TECHNICAL FIELD

Embodiments of the present application relate to the field of batteries,and more particularly, to a case for a battery, a battery, a powerconsumption device, and a method and device for producing a battery.

BACKGROUND

Energy saving and emission reduction is the key to the sustainabledevelopment of an automobile industry. In this case, electric vehicleshave become an important part of the sustainable development of theautomobile industry because of their advantages of energy saving andenvironmental friendliness. For the electric vehicles, batterytechnology is an important factor related to their development.

In the development of the battery technology, in addition to improvingthe performance of a battery, safety is also a problem that cannot beignored. If the safety of the battery cannot be ensured, the batterycannot be used.

When a battery is in a high-temperature and high-humidity environment,condensate is likely to be produced in a case of the battery, causingsafety hazards and affecting the safety of the battery. Therefore, howto enhance the safety of the battery is an urgent technical problem tobe solved in the battery technology.

SUMMARY

Embodiments of the present application provide a case for a battery, abattery, a power consumption device, and a method and device forproducing a battery, which can enhance the safety of the battery.

In a first aspect, provided is a case for a battery, including: athermal management component configured to adjust temperature of abattery cell accommodated in the case; a first wall provided with athrough hole, the through hole being configured to communicate a gasinside and outside the case; and a condensing component attached to thethermal management component, the condensing component being configuredto shield the through hole so as to condense a gas flowing into theinside of the case through the through hole.

According to a technical solution of an embodiment of the presentapplication, a condensing component is utilized to be attached to athermal management component, and shield a through hole thatcommunicates a gas inside and outside a case so as to condense a gasflowing into the inside of the case through the through hole. In thisway, condensate can be enabled to be far away from an electricalconnection region in the case. Therefore, the safety of a battery can beenhanced.

In some embodiments, the condensing component is disposed on an innersurface of the case.

In some embodiments, the thermal management component intersects withthe first wall, a first portion of the condensing component extendsalong the thermal management component to be attached to the thermalmanagement component, and a second portion of the condensing componentextends along the first wall to shield the through hole.

In some embodiments, the condensing component includes a cover-likestructure, and the cover-like structure shields the through hole.

In some embodiments, the cover-like structure is attached to a region ofthe first wall around the through hole, and has a first opening for thegas to flow into the case.

In some embodiments, the first opening is disposed in a first directionof the cover-like structure, and the first direction is an oppositedirection of a gravity direction.

By shielding a through hole by a cover-like structure, a gas reachingthe through hole can be condensed by the cover-like structure, therebyimproving a condensation effect. The condensed gas can enter the insideof a case through a first opening of the cover-like structure tomaintain balance of pressure inside and outside the case.

In some embodiments, the first opening corresponds to a connection of apipeline of a fire-fighting system in the case, and the first opening isfurther configured to collect a fluid leaked at the connection when thefluid is leaked at the connection.

In this way, it is possible to avoid safety hazards caused by spreadingof a fluid leaked at a connection in a case.

In some embodiments, the cover-like structure is hemispherical andsquare.

In some embodiments, the condensing component further includes a flowchannel, and the flow channel is configured to guide condensate in thecover-like structure to the thermal management component.

In some embodiments, portions of the condensing component on both sidesof the flow channel are attached to the thermal management component orthe first wall.

In some embodiments, the cover-like structure has a second openingcorresponding to the flow channel, and the second opening is configuredto guide the condensate in the cover-like structure to the flow channel.

In some embodiments, the second opening is disposed in a seconddirection of the cover-like structure, and the second direction is agravity direction.

In some embodiments, a one-way gravity valve is disposed on the thermalmanagement component, and the one-way gravity valve is configured todischarge the condensate in the flow channel from the case when thegravity of the condensate in the flow channel reaches a threshold.

Through a cover-like structure and a flow channel, condensate or a fluidleaked at a connection of a fire-fighting pipeline can be guided to athermal management component. Through a one-way gravity valve, whenthere are a lot of condensate or leaked fluids, they can be dischargedfrom a case, so as to ensure the safety of a battery.

In some embodiments, the case further includes: a pressure balancingmechanism configured to balance pressure inside and outside the case.

In some embodiments, the first wall includes a first sub-wall and asecond sub-wall, where a cavity is formed between the first sub-wall andthe second sub-wall, the first sub-wall is an inner wall of the case,the second sub-wall is an outer wall of the case, and the through holeis disposed on the first sub-wall.

In some embodiments, the pressure balancing mechanism is disposed on thesecond sub-wall, and a gas flowing into the cavity from the outside ofthe case through the pressure balancing mechanism flows into the insideof the case through the through hole.

In some embodiments, the first wall is configured to condense the gasflowing into the cavity through the pressure balancing mechanism in thecavity.

A first sub-wall and a second sub-wall may form a cavity. In this way,after a gas outside a case enters the cavity, it will condense in thecavity to form condensate in the cavity; moreover, due to the existenceof the cavity, gas condensing space is enlarged and a condensationeffect is further improved.

In some embodiments, an axis of the through hole does not overlap withan axis of the pressure balancing mechanism.

In some embodiments, an orthographic projection of the through hole onthe second sub-wall does not overlap with the pressure balancingmechanism.

Staggered arrangement of a through hole and a pressure balancingmechanism can extend the channel of a gas in a cavity and improve acondensation effect on the gas.

In some embodiments, a fins is disposed in the cavity, and the fin isconfigured to condense the gas flowing into the cavity through thepressure balancing mechanism.

By disposing a fin, a condensation area of a gas can be enlarged,thereby improving a condensation effect on the gas.

In some embodiments, the fin is disposed in a gas channel from thepressure balancing mechanism to the through hole.

In this way, when a gas flows from a pressure balancing mechanism to athrough hole, it will contact fin and be condensed by the fin, whichimproves a condensation effect.

In some embodiments, the fin is fixed on the first sub-wall.

In some embodiments, the fin is parallel to a connecting line from acenter of the pressure balancing mechanism to a center of the throughhole.

In this way, not only can a condensation effect of fin be achieved, butalso the fin can be used to guide air flow without obstructing the flowof a gas, so as to ensure balance of pressure inside and outside a case.

In a second aspect, provided is a battery, including: a plurality ofbattery cells; and the case in the first aspect, where the plurality ofbattery cells are accommodated in the case.

In a third aspect, provided is a power consumption device, including:the battery in the second aspect.

In some embodiments, the power consumption device is a vehicle, a shipor a spacecraft.

In a fourth aspect, provided is a method for producing a battery,including: providing a plurality of battery cells; providing a case, thecase including: a thermal management component configured to adjusttemperature of the battery cell accommodated in the case; a first wallprovided with a through hole, the through hole being configured tocommunicate a gas inside and outside the case; and a condensingcomponent attached to the thermal management component, the condensingcomponent being configured to shield the through hole so as to condensea gas flowing into the inside of the case through the through hole; andaccommodating the plurality of battery cells in the case.

In some embodiments, the thermal management component intersects withthe first wall, a first portion of the condensing component extendsalong the thermal management component to be attached to the thermalmanagement component, and a second portion of the condensing componentextends along the first wall to shield the through hole.

In some embodiments, the condensing component includes a cover-likestructure, and the cover-like structure shields the through hole.

In some embodiments, the cover-like structure is attached to a region ofthe first wall around the through hole, and has a first opening for thegas to flow into the case.

In some embodiments, the condensing component further includes a flowchannel, and the flow channel is configured to guide condensate in thecover-like structure to the thermal management component.

In a fifth aspect, provided is a device for producing a battery,including modules for executing the method in the foregoing fourthaspect.

BRIEF DESCRIPTION OF THE DRAWINGS

The accompanying drawings described herein are intended to provide afurther understanding of the present application, which constitute apart of the present application. The illustrative embodiments of thepresent application and the description thereof are for explaining thepresent application and do not constitute an undue limitation of thepresent application. In the drawings:

FIG. 1 is a schematic diagram of a vehicle according to an embodiment ofthe present application;

FIG. 2 is a schematic structural diagram of a battery according to anembodiment of the present application;

FIG. 3 is a schematic structural diagram of a battery module accordingto an embodiment of the present application;

FIG. 4 is an exploded view of a battery cell according to an embodimentof the present application;

FIGS. 5-11 are schematic structural diagrams of a case according to someembodiments of the present application;

FIG. 12 is a schematic partial structural diagram of a battery accordingto an embodiment of the present application;

FIG. 13 is a schematic flowchart of a method for producing a batteryaccording to an embodiment of the present application; and

FIG. 14 is a schematic block diagram of a device for producing a batteryaccording to an embodiment of the present application.

DESCRIPTION OF EMBODIMENTS

To make the objectives, technical solutions and advantages of theembodiments of the present application clearer, the following clearlydescribes the technical solutions in the embodiments of the presentapplication with reference to the accompanying drawings in theembodiments of the present application. Apparently, the describedembodiments are merely some but not all of the embodiments of thepresent application. All the other embodiments obtained by those ofordinary skill in the art based on the embodiments of the presentapplication without any inventive effort shall fall within the scope ofprotection of the present application.

Unless otherwise defined, all technical and scientific terms used in thepresent application have the same meanings as those commonly understoodby those skilled in the art to which the present application belongs.The terms used in the specification of the present application aremerely for the purpose of describing specific embodiments, but are notintended to limit the present application. The terms “comprising” and“having” and any variations thereof in the specification and the claimsof the present application as well as the foregoing description of theaccompanying drawings are intended to cover non-exclusive inclusions.The terms “first”, “second” and the like in the specification and theclaims of the present application as well as the above drawings are usedto distinguish different objects, rather than to describe a specificorder or primary-secondary relationship.

The word “embodiments” referred to in the present application means thatthe descriptions of specific features, structures, and characteristicsin combination with the embodiments are comprised in at least oneembodiment of the present application. The phrase at various locationsin the specification does not necessarily refer to the same embodiment,or an independent or alternative embodiment exclusive of anotherembodiment. Those skilled in the art understand, in explicit andimplicit manners, that an embodiment described in the presentapplication may be combined with another embodiment.

In the description of the present application, it should be noted that,unless explicitly specified and defined otherwise, terms “installation”,“interconnection”, “connection” and “attachment” should be understoodbroadly, for example, they may either be a fixed connection, or adetachable connection, or an integrated connection; and they may eitherbe a direct connection, or an indirect connection through anintermediary, and they may be an internal connection between twoelements. Those of ordinary skill in the art may understand specificmeanings of the above terms in the present application according tospecific conditions.

In the present application, the term “and/or” is only an associationrelation describing associated objects, which means that there may bethree relations, for example, A and/or B may represent three situations:A exists alone, both A and B exist, and B exists alone. In addition, thecharacter “/” in the present application generally indicates that theassociated objects before and after the character are in an “or”relation.

In the present application, “a plurality of” means two or more(including two), similarly, “a plurality of groups” means two or moregroups (including two groups), and “a plurality of sheets” means two ormore sheets (including two sheets).

In the present application, battery cells may include lithium-ionsecondary batteries, lithium-ion primary batteries, lithium-sulfurbatteries, sodium/lithium-ion batteries, sodium-ion batteries ormagnesium-ion batteries, etc., which is not limited by the embodimentsof the present application. The battery cells may be cylindrical, flat,cuboid, or in another shape, which is not limited by the embodiments ofthe present application. The battery cells are generally divided intothree types according to the way of packaging: cylindrical batterycells, prismatic battery cells and pouch battery cells, which is notlimited by the embodiments of the present application.

The battery mentioned in the embodiment of the present applicationrefers to a single physical module that includes one or more batterycells to provide a higher voltage and capacity. For example, the batterymentioned in the present application may include a battery module or abattery pack. The battery generally includes a case for enclosing one ormore battery cells. The case can prevent a liquid or other foreignmatters from affecting the charging or discharging of the battery cell.

The battery cell includes an electrode assembly and an electrolyticsolution, and the electrode assembly is composed of a positive electrodesheet, a negative electrode sheet and an isolation film. The operationof the battery cell mainly relies on the movement of metal ions betweenthe positive electrode sheet and the negative electrode sheet. Thepositive electrode sheet includes a positive electrode current collectorand a positive active material layer. The positive active material layeris coated on a surface of the positive electrode current collector, andthe current collector not coated with the positive active material layerprotrudes from the current collector coated with the positive activematerial layer and is used as a positive electrode tab. As an example,in a lithium-ion battery, the material of the positive electrode currentcollector may be aluminum, and the positive active material may belithium cobalt oxide, lithium iron phosphate, ternary lithium or lithiummanganate, etc. The negative electrode sheet includes a negativeelectrode current collector and a negative active material layer. Thenegative active material layer is coated on a surface of the negativeelectrode current collector, and the current collector not coated withthe negative active material layer protrudes from the current collectorcoated with the negative active material layer and is used as a negativeelectrode tab. The material of the negative electrode current collectormay be copper, and the negative active material may be carbon orsilicon, etc. In order to ensure that no fusing occurs when a largecurrent passes, there are a plurality of positive electrode tabs whichare stacked together, and there are a plurality of negative electrodetabs which are stacked together. A material of the isolation film may bePP, PE, or the like. In addition, the electrode assembly may be in awinding structure or a laminated structure, and the embodiment of thepresent application is not limited thereto.

With the development of the battery technology, it is necessary toconsider many design factors, such as energy density, cycle life,discharge capacity, charging and discharging rates and other performanceparameters. In addition, the safety of the battery should also beconsidered.

With respect to battery cells, the main safety hazards come from thecharging and discharging processes, and a suitable environmentaltemperature design is also required. In order to effectively avoidunnecessary losses, at least triple protection measures are generallytaken for the battery cells. Specifically, the protection measures atleast include a switching element, an appropriately selected isolationfilm material and a pressure relief mechanism. The switching elementrefers to an element that can stop the charging or discharging of abattery when the temperature or resistance in a battery cell reaches acertain threshold. The isolation film is configured to isolate thepositive electrode sheet from the negative electrode sheet and canautomatically dissolve micron-sized (or even nanoscale) microporesattached to the isolation film when the temperature rises to a certainvalue, thus preventing metal ions from passing through the isolationfilm and terminating the internal reaction of the battery cell.

The pressure relief mechanism refers to an element or component that isactuated when an internal pressure or temperature of the battery cellreaches a predetermined threshold, to relieve the internal pressure ortemperature. The threshold design is different according to differentdesign requirements. The threshold may depend on the material of one ormore of the positive electrode sheet, the negative electrode sheet, theelectrolytic solution and the isolation film in the battery cell. Thepressure relief mechanism may take the form of an explosion-proof valve,an air valve, a pressure relief valve or a safety valve, etc., and mayspecifically adopt a pressure-sensitive or temperature-sensitive elementor structure. That is, when the internal pressure or temperature of thebattery cell reaches a predetermined threshold, the pressure reliefmechanism performs an action or a weakened structure provided in thepressure relief mechanism is damaged, so as to form an opening orchannel for relieving the internal pressure or temperature.

The “actuation” mentioned in the present application means that thepressure relief mechanism acts or is activated to a certain state, suchthat the internal pressure and temperature of the battery cell can berelieved. The action generated by the pressure relief mechanism mayinclude but be not limited to: at least a portion of the pressure reliefmechanism being fractured, broken, torn or opened, and so on. When thepressure relief mechanism is actuated, high-temperature andhigh-pressure substances inside the battery cell are discharged outwardsfrom an actuated position as emissions. In this way, the pressure andtemperature in the battery cell can be relieved at a controllablepressure or temperature, thereby avoiding potential, more seriousaccidents.

The emissions from the battery cell mentioned in the present applicationinclude but are not limited to: the electrolytic solution, the dissolvedor split positive and negative electrode sheets, fragments of theisolation film, high-temperature and high-pressure gas generated byreaction, flame, etc.

The pressure relief mechanism on the battery cell has an importantimpact on the safety of the battery. For example, when short circuit,overcharge and other phenomena occur, it may lead to thermal runawayinside the battery cell, resulting in a sudden increase in pressure ortemperature. In this case, the internal pressure and temperature can bereleased outward through the actuation of the pressure relief mechanism,to prevent the battery cell from exploding and catching fire.

In the current design solutions of the pressure relief mechanism, themain concern is to release the high pressure and high heat inside thebattery cell, i.e., to discharge the emissions to the outside of thebattery cell. The high-temperature and high-pressure emissions aredischarged in a direction of the pressure relief mechanism provided inthe battery cell, and more specifically, may be discharged in adirection of a region where the pressure relief mechanism is actuated.The strength and destructive power of such emissions may be great, ormay even be enough to break through one or more structures in thisdirection, causing safety problems. In addition, after thermal runawayoccurs inside the battery cell, high pressure and high heat inside thebattery cell may continue to be generated, resulting in continuoussafety hazards.

In view of the foregoing problems, a fire-fighting system may bedisposed inside a case of a battery, and a fire-fighting pipeline of thefire-fighting system is disposed above a wall of a battery cell providedwith a pressure relief mechanism. When the pressure relief mechanism isactuated, the fire-fighting pipeline discharges a fire-fighting medium,thereby lowering temperature of the emissions discharged from thepressure relief mechanism and reducing the risk resulting from theemissions; and the fire-fighting medium may further flow into the insideof the battery cell through the actuated pressure relief mechanism,thereby further lowering temperature of the battery cell and enhancingthe safety of the battery. For example, the emissions discharged fromthe battery cell when the pressure relief mechanism is actuated may beused to damage the fire-fighting pipeline, so that the fire-fightingmedium in the fire-fighting pipeline is discharged.

The fire-fighting pipeline in an embodiment of the present applicationis configured to accommodate a fire-fighting medium, and thefire-fighting medium here may be a fluid, and the fluid may be a liquidor a gas. In the case where the pressure relief mechanism does notdamage the fire-fighting pipeline, the fire-fighting pipeline may notaccommodate any substance, but in the case where the pressure reliefmechanism is actuated, the fire-fighting medium may be accommodated inthe fire-fighting pipeline, for example, the fire-fighting medium may becontrolled to enter the fire-fighting pipeline by switching on and off avalve. Or, in the case where the pressure relief mechanism is notdamaged, the fire-fighting medium may always be accommodated in thefire-fighting pipeline, and the fire-fighting medium may also be usedfor adjusting the temperature of the battery cell. Temperatureadjustment means heating or cooling a plurality of battery cells. In thecase of cooling or lowering the temperature of the battery cells, thefire-fighting pipeline is configured to accommodate a cooling fluid tolower the temperature of the plurality of battery cells. In this case,the fire-fighting pipeline may also be called a cooling component, acooling system or a cooling pipeline, etc. The fire-fighting mediumaccommodated by the fire-fighting pipeline may also be called a coolingmedium or a cooling fluid, and more specifically, may be called acooling liquid or a cooling gas. Optionally, the fire-fighting mediummay flow in a circulating manner to achieve better temperatureadjustment effects. Optionally, the fire-fighting medium may be water, amixture of water and ethylene glycol, or air, etc.

When a battery is in a high-temperature and high-humidity environment,condensate is likely to be produced in a case of the battery, causingsafety hazards and affecting the safety of the battery. Specifically,when a high-temperature and high-humidity gas in the battery encountersa component with lower temperature, such as a fire-fighting pipeline inthe case of the battery, condensate will be produced. If the condensatedrips into an electrical connection region in the battery, the safety ofthe battery may be affected.

In view of this, the present application provides a technical solutionin which a condensing component is utilized to be attached to a thermalmanagement component, and shield a through hole that communicates a gasinside and outside a case of a battery so as to condense a gas flowinginto the inside of the case through the through hole. In this way,condensate can be enabled to be far away from an electrical connectionregion in the case. Therefore, the safety of the battery can beenhanced.

The thermal management component is configured to accommodate a fluid toadjust temperature of a plurality of battery cells. The fluid here maybe a liquid or a gas, and temperature adjustment means heating orcooling the plurality of battery cells. In the case of cooling orlowering the temperature of the battery cells, the thermal managementcomponent is configured to accommodate a cooling fluid to lower thetemperature of the plurality of battery cells. In this case, the thermalmanagement component may also be called a cooling component, a coolingsystem or a cooling plate, etc. The fluid accommodated by the thermalmanagement component may also be called a cooling medium or a coolingfluid, and more specifically, may be called a cooling liquid or acooling gas. In addition, the thermal management component may also beconfigured for heating to raise the temperature of the plurality ofbattery cells, which is not limited by the embodiment of the presentapplication. Optionally, the fluid may flow in a circulating manner toachieve better temperature adjustment effects. Optionally, the fluid maybe water, a mixture of water and ethylene glycol, or air, etc.

The condensing component is attached to the thermal managementcomponent, and shields the through hole that communicates the gas insideand outside the case of the battery so as to condense the gas flowinginto the inside of the case through the through hole. The condensingcomponent may be made of a material with good thermal conductivity, suchas metal. The condensing component may adopt various possible shapes andarrangements, as long as it can shield the through hole to condense thegas flowing into the inside of the case through the through hole.

The case of the battery is configured to accommodate the plurality ofbattery cells, a bus component and other components of the battery. Insome embodiments, a structure configured to fix the battery cells mayalso be provided in the case. The shape of the case may be determinedaccording to the plurality of battery cells accommodated therein. Insome embodiments, the case may be a cube with six walls.

The bus component is configured to implement electrical connectionbetween the plurality of battery cells, such as parallel connection,series connection or series-parallel connection, to form a highervoltage output. The bus component may implement the electricalconnection between the battery cells by connecting electrode terminalsof the battery cells. In some embodiments, the bus component may befixed to the electrode terminals of the battery cells by means ofwelding. The electrical connection formed by the bus component may alsobe called “high-voltage connection”.

In addition to the bus component, a sensing device configured to sense astate of the battery cell may further be provided in the battery. In anembodiment of the present application, the electrical connection in thebattery may include electrical connection formed by the bus componentand/or electrical connection in the sensing device.

A pressure balancing mechanism may further be disposed on the case ofthe battery and is configured to balance pressure inside and outside thecase. For example, when the pressure inside the case is higher than thatoutside the case, the gas inside the case may flow into the outside ofthe case through the pressure balancing mechanism; and when the pressureinside the case is lower than that outside the case, the gas outside thecase may flow into the inside of the case through the pressure balancingmechanism.

It should be understood that each component in the case of the batterydescribed above should not be construed as a limitation to theembodiment of the present application, that is, the case for the batteryaccording to the embodiment of the present application may or may notinclude the foregoing components.

The technical solutions described in the embodiments of the presentapplication are all applicable to various devices using batteries, suchas mobile phones, portable apparatuses, notebook computers,electromobiles, electronic toys, electric tools, electric vehicles,ships and spacecrafts. For example, the spacecrafts include airplanes,rockets, space shuttles, spaceships, etc.

It should be understood that the technical solutions described in theembodiments of the present application are not only applicable to theforegoing apparatuses, but also applicable to all apparatuses usingbatteries. However, for the sake of brevity, the following embodimentstake electric vehicles as an example for description.

For example, as shown in FIG. 1, it is a schematic structural diagram ofa vehicle 1 according to an embodiment of the present application. Thevehicle 1 may be a fuel vehicle, a gas vehicle or a new-energy vehicle.The new-energy vehicle may be a full electric vehicle, a hybrid vehicleor an extended-range vehicle, or the like. A motor 40, a controller 30and a battery 10 may be disposed inside the vehicle 1, and thecontroller 30 is configured to control the battery 10 to supply power tothe motor 40. For example, the battery 10 may be disposed at the bottomor the head or the tail of the vehicle 1. The battery 10 may beconfigured to supply power to the vehicle 1. For example, the battery 10can be used as an operation power supply of the vehicle 1 and is usedfor a circuit system of the vehicle 1, for example, for a working powerdemand of the vehicle 1 during startup, navigation and running. Inanother embodiment of the present application, the battery 10 may beused not only as an operating power source for the vehicle 1 but also asa driving power source for the vehicle 1, replacing or partiallyreplacing fuel or natural gas to provide driving power for the vehicle1.

In order to meet different power requirements, the battery 10 mayinclude a plurality of battery cells 20, where the plurality of batterycells 20 may be in series connection, parallel connection orseries-parallel connection. The series-parallel connection refers to acombination of series connection and parallel connection. The batterymay also be called a battery pack. Optionally, the plurality of batterycells 20 may be first connected in series, in parallel or in series andparallel to form a battery module, and then a plurality of batterymodules are connected in series, in parallel or in series and parallelto form a battery 10. That is, a plurality of battery cells 20 maydirectly form a battery 10, or may first form a battery module, and thenbattery modules form a battery 10.

For example, as shown in FIG. 2, it is a schematic structural diagram ofa battery 10 according to an embodiment of the present application. Thebattery 10 may include a plurality of battery cells 20. The battery 10may further include a case 11 with a hollow structure inside, and theplurality of battery cells 20 are accommodated in the case 11. As shownin FIG. 2, the case may include two portions, which are referred toherein as a first portion 111 (an upper case) and a second portion 112(a lower case), respectively, and the first portion 111 and the secondportion 112 are fastened together. The shapes of the first portion 111and the second portion 112 may be determined according to the shape ofthe combined plurality of battery cells 20, and the first portion 111and the second portion 112 may each have an opening. For example, thefirst portion 111 and the second portion 112 each may be a hollow cuboidand each have only one surface with an opening, and the opening of thefirst portion 111 is disposed opposite to the opening of the secondportion 112. The first portion 111 and the second portion 112 arefastened to each other to form the case 11 with a closed chamber. Theplurality of battery cells 20 are combined in parallel connection orseries connection or series-parallel connection and are then placed inthe case 11 formed by fastening the first portion 111 to the secondportion 112.

Optionally, the battery 10 may also include other structures, which willnot be described in detail herein. For example, the battery 10 may alsoinclude a bus component. The bus component is configured to implementthe electrical connection between the plurality of battery cells 20,such as parallel connection, series connection or series-parallelconnection. Specifically, the bus component may implement the electricalconnection between the battery cells 20 by connecting electrodeterminals of the battery cells 20. Further, the bus component may befixed to the electrode terminals of the battery cells 20 by means ofwelding. Electric energy of the plurality of battery cells 20 can befurther led out through an electrically conductive mechanism passingthrough the case 11. Optionally, the electrically conductive mechanismmay also belong to the bus component.

According to different power requirements, the number of the batterycells 20 may be set as any value. The plurality of battery cells 20 maybe connected in series, in parallel or in series and parallel toimplement larger capacity or power. Since there may be many batterycells 20 included in each battery 10, the battery cells 20 may bearranged in groups for convenience of installation, and each group ofbattery cells 20 constitutes a battery module. The number of the batterycells 20 included in the battery module is not limited and may be set asrequired. For example, FIG. 3 shows an example of a battery module. Thebattery may include a plurality of battery modules, and these batterymodules may be connected in series, in parallel or in series andparallel. As shown in FIG. 4, it is a schematic structural diagram of abattery cell 20 according to an embodiment of the present application.The battery cell 20 includes one or more electrode assemblies 22, ahousing 211 and a cover plate 212. The coordinate system shown in FIG. 4is the same as that in FIG. 3. The housing 211 and the cover plate 212form a shell or a battery box 21. A wall of the housing 211 and thecover plate 212 are both referred to as a wall of the battery cell 20.The housing 211 is shaped according to the combined shape of the one ormore electrode assemblies 22. For example, the housing 211 may be ahollow cuboid or cube or cylinder, and one surface of the housing 211has an opening such that the one or more electrode assemblies 22 can beplaced in the housing 211. For example, when the housing 211 is a hollowcuboid or cube, one plane of the housing 211 is an opening surface,i.e., the plane does not have a wall, so that the inside and outside ofthe housing 211 are in communication with each other. When the housing211 is a hollow cylinder, an end face of the housing 211 is an openingsurface, i.e., the end face does not have a wall, so that the inside andoutside of the housing 211 are in communication with each other. Thecover plate 212 covers the opening and is connected to the housing 211to form a closed cavity in which the electrode assembly 22 is placed.The housing 211 is filled with an electrolyte, such as an electrolyticsolution.

The battery cell 20 may further include two electrode terminals 214, andthe two electrode terminals 214 may be disposed on the cover plate 212.The cover plate 212 is generally in the shape of a flat plate, and thetwo electrode terminals 214 are fixed on a flat plate surface of thecover plate 212. The two electrode terminals 214 are a positiveelectrode terminal 214 a and a negative electrode terminal 214 b,respectively. Each electrode terminal 214 is correspondingly providedwith a connecting member 23, or referred to as a current collectingmember, which is located between the cover plate 212 and the electrodeassembly 22, and configured to electrically connect the electrodeassembly 22 and the electrode terminal 214.

As shown in FIG. 4, each electrode assembly 22 has a first electrode tab221 a and a second electrode tab 222 a. The first electrode tab 221 aand the second electrode tab 222 a have opposite polarities. Forexample, when the first electrode tab 221 a is a positive electrode tab,the second electrode tab 222 a is a negative electrode tab. The firstelectrode tab 221 a of the one or more electrode assemblies 22 isconnected to one electrode terminal through one connecting member 23,and the second electrode tab 222 a of the one or more electrodeassemblies 22 is connected to the other electrode terminal through theother connecting member 23. For example, the positive electrode terminal214 a is connected to the positive electrode tab through one connectingmember 23, and the negative electrode terminal 214 b is connected to thenegative electrode tab through the other connecting member 23.

In the battery cell 20, according to actual usage requirements, theremay be a single or a plurality of electrode assemblies 22. As shown inFIG. 4, there are four independent electrode assemblies 22 in thebattery cell 20.

A pressure relief mechanism 213 may also be disposed on the battery cell20. The pressure relief mechanism 213 is configured to be actuated whenan internal pressure or temperature of the battery cell 20 reaches athreshold, to relieve the internal pressure or temperature.

The pressure relief mechanism 213 may be in various possible pressurerelief structures, which is not limited in the embodiment of the presentapplication. For example, the pressure relief mechanism 213 may be atemperature-sensitive pressure relief mechanism configured to be capableof being melted when an internal temperature of the battery cell 20provided with the pressure relief mechanism 213 reaches a threshold;and/or the pressure relief mechanism 213 may be a pressure-sensitivepressure relief mechanism configured to be capable of being fracturedwhen an internal gas pressure of the battery cell 20 provided with thepressure relief mechanism 213 reaches a threshold.

FIG. 5 is a schematic diagram of a case 11 for a battery according to anembodiment of the present application. As shown in FIG. 5, the case 11may include a thermal management component 13, a first wall 110 and acondensing component 16.

The thermal management component 13 is configured to adjust temperatureof battery cells 20 accommodated in the case 11. In the case of loweringthe temperature of the battery cells 20, the thermal managementcomponent 13 may accommodate a cooling medium to adjust the temperatureof the plurality of battery cells 20. In this case, the thermalmanagement component 13 may also be called a cooling component, acooling system or a cooling plate, etc. Optionally, a fluid accommodatedin the thermal management component 13 may flow in a circulating mannerto achieve a better temperature regulation effect. Optionally, thethermal management component 13 may be disposed at the bottom of thecase 11.

The first wall 110 is provided with a through hole 110 c, and thethrough hole 110 c is configured to communicate a gas inside and outsidethe case 11. The first wall 110 may be any wall of the case 11.Optionally, as shown in FIG. 5, the first wall 110 may be a side wall ofthe case 11. For example, the side wall may be a side wall of the secondportion 112 (the lower case) in FIG. 2. The through hole 110 c may beconfigured to balance pressure inside and outside the case 11. Forexample, when the pressure inside the case 11 is higher than thatoutside the case 11, the gas inside the case 11 may flow into theoutside of the case 11 through the through hole 110 c; and when thepressure inside the case 11 is lower than that outside the case 11, thegas outside the case 11 may flow into the inside of the case 11 throughthe through hole 110 c.

The condensing component 16 is attached to the thermal managementcomponent 13, and the condensing component 16 is configured to shieldthe through hole 110 c so as to condense a gas flowing into the insideof the case 11 through the through hole 110 c.

The condensing component 16 may be made of a material with good thermalconductivity, such as metal, which is not limited in the embodiment ofthe present application. The shape and arrangement of the condensingcomponent 16 are not limited, as long as it can shield the through hole110 c to condense the gas flowing into the inside of the case 11 throughthe through hole 110 c. The condensing component 16 may completelyshield the through hole 110 c, or may partially shield the through hole110 c.

Since the thermal management component 13 can maintain a lowertemperature, the temperature of the condensing component 16 attached tothe thermal management component 13 will be lower, so that the gasflowing from the outside of the case 11 into the inside of the case 11through the through hole 110 c is condensed by the condensing component16, and condensate is enabled to be far away from an electricalconnection region in the case 11, and the gas flowing into the inside ofthe case 11 is relatively dry and not easy to re-form condensate insidethe case 11. Therefore, the safety of the battery 10 can be enhanced.

For example, if there is condensate at an electrical connection betweenthe battery cells 20, that is, an electrical connection formed by a buscomponent, it may lead to a short circuit between high voltages andcause safety problems; or, if there is condensate at an electricalconnection in a sensing device, it may lead to sensing failure of thesensing device, affect a battery management system and further may causesafety problems.

Therefore, in the embodiment of the present application, the condensingcomponent 16 is utilized to be attached to the thermal managementcomponent 13, and shield the through hole 110 c that communicates thegas inside and outside the case 11 so as to condense the gas flowinginto the inside of the case 11 through the through hole 110 c. In thisway, condensate can be enabled to be far away from an electricalconnection region in the case 11. Therefore, the safety of the battery10 can be enhanced.

The technical solution of the embodiment of the present application canbe applied to a battery 10 with a fire-fighting system. In order toimprove the safety of the battery 10, a fire-fighting system may beincluded in the battery 10, and a fire-fighting pipeline of thefire-fighting system may be disposed on a wall (for example, a coverplate 212) of the battery cell 20 that is provided with a pressurerelief mechanism 213. When the pressure relief mechanism 213 isactuated, the fire-fighting pipeline discharges a fire-fighting medium,thereby lowering temperature of emissions discharged from the pressurerelief mechanism 213 and reducing the risk resulting from the emissions;and the fire-fighting medium may further flow into the inside of thebattery cell 20 through the actuated pressure relief mechanism 213,thereby further lowering temperature of the battery cell 20 andenhancing the safety of the battery 10. Due to the low temperature ofthe fire-fighting pipeline, a high-temperature and high-humidity gas inthe battery 10 may condense at the fire-fighting pipeline to producecondensate, which may drip to an electrical connection region in thebattery 10 below, thereby affecting the safety of the battery 10.

It should be understood that the above scenario with a fire-fightingsystem is only one possible application scenario of the embodiment ofthe present application, and the embodiment of the present applicationis not limited to this.

Optionally, in an embodiment of the present application, the condensingcomponent 16 may be disposed on an inner surface of the case 11.

For example, in the case where the thermal management component 13intersects with the first wall 110, a first portion of the condensingcomponent 16 extends along the thermal management component 13 to beattached to the thermal management component 13, and a second portion ofthe condensing component 16 extends along the first wall 110 to shieldthe through hole 110 c.

Optionally, in an embodiment of the present application, as shown inFIG. 5 or FIG. 6, the condensing component 16 may include a cover-likestructure 161, and the cover-like structure 161 shields the through hole110 c.

Optionally, the cover-like structure 161 may be attached to a region ofthe first wall 110 around the through hole 110 c, and have a firstopening 161 a for the gas to flow into the case 11. The first opening161 a may be disposed in a first direction of the cover-like structure161, and the first direction is an opposite direction of a gravitydirection, that is, an upward direction in FIG. 6.

By shielding the through hole 110 c by the cover-like structure 161, thegas reaching the through hole 110 c can be condensed by the cover-likestructure 161, thereby improving the condensation effect. The condensedgas can enter the inside of the case 11 through the first opening 161 aof the cover-like structure to maintain balance of pressure inside andoutside the case 11.

Optionally, the cover-like structure 161 may completely shield thethrough hole 110 c, or may partially shield the through hole 110 c. Forexample, an upper edge of the cover-like structure 161 may be higherthan the highest point of the through hole 110 c to completely shieldthe through hole 110 c, or an upper edge of the cover-like structure 161may not be higher than the highest point of the through hole 110 c topartially shield the through hole 110 c.

Optionally, in an embodiment of the present application, the firstopening 161 a corresponds to a connection of a pipeline of afire-fighting system in the case 11, and the first opening 161 a isfurther configured to collect a fluid leaked at the connection when thefluid is leaked at the connection.

When a fire-fighting system is disposed in the case 11, a fluid may beleaked at a connection of a pipeline (a fire-fighting pipeline) of thefire-fighting system. In this case, the condensing component 16 may bedisposed at a location below the connection of the fire-fightingpipeline, so that the first opening 161 a corresponds to the connectionof the fire-fighting pipeline. In this way, if a fluid is leaked at theconnection, the leaked fluid can also drop into the cover-like structure161 through the first opening 161 a and be collected.

If a fluid is leaked at the connection of the fire-fighting pipeline,and the leaked fluid is not collected, it spreads in the case 11, andcontinues to evaporate and condense, which causes safety hazards. Byadopting the solution of the embodiment of the present application, anoccurrence of the safety hazards can be reduced.

Optionally, the cover-like structure 161 may be hemispherical or square,which is not limited in the embodiment of the present application, aslong as it can realize a function in the embodiment of the presentapplication.

Optionally, in an embodiment of the present application, as shown inFIG. 7, the condensing component 16 further includes a flow channel 162,and the flow channel 162 is configured to guide condensate in thecover-like structure 161 to the thermal management component 13.Portions of the condensing component 16 on both sides of the flowchannel 162 are attached to the thermal management component 13 or thefirst wall 110 to ensure the sealing between the condensing component 16and the thermal management component 13 or the first wall 110.

The cover-like structure 161 has a second opening 161 b corresponding tothe flow channel 162, and the second opening 161 b is configured toguide the condensate in the cover-like structure 161 to the flow channel162. The second opening 161 b is disposed in a second direction of thecover-like structure 161, and the second direction is a gravitydirection, that is, a downward direction in FIG. 7.

Optionally, in an embodiment of the present application, as shown inFIG. 8, a one-way gravity valve 130 may be disposed on the thermalmanagement component 13, and the one-way gravity valve 130 is configuredto discharge the condensate in the flow channel 162 from the case 11when the gravity of the condensate in the flow channel 162 reaches athreshold.

The one-way gravity valve 130 is switched on when the gravity of aliquid in the flow channel 162 reaches a threshold, and discharges theliquid downward, while external gas cannot enter the flow channel 162 inthe reverse direction. Optionally, the flow channel 162 may be set tohave a longer length in the gravity direction to match the gravity whenthe one-way gravity valve 130 is switched on.

Through the cover-like structure 161 and the flow channel 162, thecondensate or the fluid leaked at the connection of the fire-fightingpipeline can be guided to the thermal management component 13. Further,through the one-way gravity valve 130, when there are a lot ofcondensate or leaked fluids, they can be discharged from the case 11, soas to ensure the safety of the battery 10.

Optionally, the condensing component 16 may be attached to the thermalmanagement component 13 or the first wall 110 a through a sealingmaterial or by means of welding. The sealing material may be a thermallyconductive sealing material.

It should be understood that the condensing component 16 may also beattached to the thermal management component 13 or the first wall 110 inother ways and/or at other positions. The embodiment of the presentapplication is not limited to this, as long as it can realize a functionin the embodiment of the present application.

Optionally, in an embodiment of the present application, the case 11 mayfurther include: a pressure balancing mechanism 17 configured to balancepressure inside and outside the case 11. For example, when the pressureinside the case 11 is higher than that outside the case 11, the gasinside the case 11 may flow into the outside of the case 11 through thepressure balancing mechanism 17; and when the pressure inside the case11 is lower than that outside the case 11, the gas outside the case 11may flow into the inside of the case 11 through the pressure balancingmechanism 17. Optionally, when the first wall 110 is a single-layerwall, the pressure balancing mechanism 17 may be disposed in the throughhole 110 c; and when the first wall 110 is a multi-layer wall, thepressure balancing mechanism 17 and the through hole 110 c may berespectively disposed on different layers of sub-walls.

Optionally, in an embodiment of the present application, as shown inFIG. 9, the first wall 110 may include a first sub-wall 110 a and asecond sub-wall 110 b, where a cavity is formed between the firstsub-wall 110 a and the second sub-wall 110 b, the first sub-wall 110 ais an inner wall of the case 11, the second sub-wall 110 b is an outerwall of the case 11, and the through hole 110 c is disposed on the firstsub-wall 110 a.

In this case, a pressure balancing mechanism 17 may be disposed on thesecond sub-wall 110 b, and a gas flowing into the cavity from theoutside of the case 11 through the pressure balancing mechanism 17 flowsinto the inside of the case 11 through the through hole 110 c. The firstwall 110 may be configured to condense the gas flowing into the cavitythrough the pressure balancing mechanism 17 in the cavity.

When the first wall 110 adopts a multi-layer wall arrangement, themulti-layer wall may form a cavity. For example, the first sub-wall 110a and the second sub-wall 110 b in FIG. 9 may form a cavity. In thisway, after the gas outside the case 11 enters the cavity, it cancondense in the cavity to form condensate in the cavity; moreover, dueto the existence of the cavity, gas condensing space is enlarged and acondensation effect is further improved.

Optionally, as another embodiment of the present application, thecondensate or the leaked fluid may also be guided to the cavity in thefirst wall 110 to avoid accumulation in the inside of the case 11. Forexample, a through hole on the first sub-wall 110 a may be used. Thethrough hole is set at a location lower than the cover-like structure161, and the condensate or the leaked fluid is guided to the throughhole through the flow channel to be discharged into the cavity. Further,a one-way gravity valve may also be disposed at the bottom of the cavityto discharge the condensate or the leaked fluids to the outside of thecase 11 when there are a lot of the condensate or leaked fluids.

Optionally, as shown in FIG. 9, in addition to the first sub-wall 110 aand the second sub-wall 110 b, the first wall 110 may further include athird sub-wall 110 e connecting the first sub-wall 110 a and the secondsub-wall 110 b. The embodiment of the present application is not limitedthereto.

Optionally, in an embodiment of the present application, an axis of thethrough hole 110 c does not overlap with an axis of the pressurebalancing mechanism 17. Optionally, an orthographic projection of thethrough hole 110 c on the second sub-wall 110 b does not overlap withthe pressure balancing mechanism 17.

As shown in FIGS. 9 and 10, the through hole 110 c and the pressurebalancing mechanism 17 are respectively located on the first sub-wall110 a and the second sub-wall 110 b, and do not directly face eachother. In a case where the through hole 110 c and the pressure balancingmechanism 17 directly face each other, after the external gas enters thecavity through the pressure balancing mechanism 17, it will quicklyenter the inside of the case 11 through the through hole 110 c, whichmay affect the condensation effect on the gas. In the embodiment of thepresent application, staggered arrangement of the through hole 110 c andthe pressure balancing mechanism 17 can extend the channel of the gas inthe cavity and improve the condensation effect on the gas.

Optionally, in an embodiment of the present application, as shown inFIG. 11, fin 110 d may be further disposed in the cavity, and the fin110 d are configured to condense the gas flowing into the cavity throughthe pressure balancing mechanism 17.

By disposing the fins 110 d, a condensation area of the gas can beenlarged, thereby improving the condensation effect on the gas.

The fin 110 d may be disposed in a gas channel from the pressurebalancing mechanism 17 to the through hole 110 c. In this way, when thegas flows from the pressure balancing mechanism 17 to the through hole110 c, it will contact the fin 110 d and be condensed by the fin 110 d,thereby improving the condensation effect.

The fin 110 d may be fixed on the first sub-wall 110 a. The fixingmethod may be bonding, welding, bolting, etc., which is not limited inthe embodiment of the present application. When the fixing method isbolting, the fin 110 d makes bolt avoidance and hole opening.

Optionally, the fin 110 d may be parallel to a connecting line from acenter of the pressure balancing mechanism 17 to a center of the throughhole 110 c. In this way, not only can the condensation effect of the fin110 d be achieved, but also the fin 110 d can be used to guide air flowwithout obstructing the flow of the gas, so as to ensure balance of thepressure inside and outside the case 11.

An embodiment of the present application further provides a battery 10,and the battery 10 may include a plurality of battery cells 20 and thecase 11 described in each of the foregoing embodiments, where theplurality of battery cells 20 are accommodated in the case 11.

Optionally, the battery 10 may also include other battery components,for example, a bus component, a sensing device, a fire-fighting system,etc., which is not limited in the embodiment of the present application.

FIG. 12 is a schematic partial structural diagram of a battery 10according to an embodiment of the present application. As shown in FIG.12, the battery 10 may include a case 11 and a plurality of batterycells 20.

The case 11 may be the case 11 described in each of the foregoingembodiments. For example, the case 11 includes a condensing component 16attached to a thermal management component 13, and the condensingcomponent 16 is configured to shield a through hole 110 c so as tocondense a gas flowing into the inside of the case 11 through thethrough hole 110 c.

The battery cell 20 may be the battery cell 20 described in each of theforegoing embodiments. For example, the battery cell 20 may be thebattery cell 20 in FIG. 4.

The battery 10 may further include a bus component configured toimplement electrical connection of the plurality of battery cells 20.The battery 10 may further include a sensing device configured to sensea state of the battery cell 20. The bus component and the sensing devicemay be disposed above the battery cell 20.

A cover plate of the battery cell 20 may be provided with a pressurerelief mechanism 213 configured to be actuated when an internal pressureor temperature of the battery cell 20 reaches a threshold, to relievethe internal pressure. A fire-fighting pipeline may further be disposedon the pressure relief mechanism 213 to discharge a fire-fighting mediumwhen the pressure relief mechanism 213 is actuated, so as to lowertemperature of emissions discharged from the pressure relief mechanismand to lower temperature of the battery cell 20.

A pressure balancing mechanism 17 may further be disposed on the firstwall 110 to balance pressure inside and outside the case 11. When thepressure balancing mechanism 17 balances the pressure inside and outsidethe case 11, a gas flows into the inside of the case 11 through thethrough hole 110 c. As described in each of the foregoing embodiments,the gas is condensed while flowing into the inside of the case 11, sothat the gas flowing into the inside of the case 11 is relatively dryand not easy to re-form condensate inside the case 11, thereby avoidingsafety problems resulted from the fact that an electrical connectionregion in the case 11, for example, an electrical connection region ofthe bus component or the sensing device, is affected by the condensate.

For the specific description of each component in the battery 10,reference can be made to each of the foregoing embodiments, which willnot be repeated here for brevity.

An embodiment of the present application further provides a powerconsumption device, which may include the battery 10 in each of theforegoing embodiments. Optionally, the power consumption device may be avehicle 1, a ship or a spacecraft.

A case for a battery, a battery and a power consumption device accordingto embodiments of the present application are described above, and amethod and device for producing a battery according to embodiments ofthe present application will be described below. For parts not describedin detail, reference can be made to each of the foregoing embodiments.

FIG. 13 shows a schematic flowchart of a method 300 for producing abattery according to an embodiment of the present application. As shownin FIG. 13, the method 300 may include:

310, providing a plurality of battery cells 20;

320, providing a case 11, the case 11 including:

a thermal management component 13 configured to adjust temperature ofthe battery cell 20 accommodated in the case 11;

a first wall 110 provided with a through hole 110 c, the through hole110 c being configured to communicate a gas inside and outside the case11; and

a condensing component 16 attached to the thermal management component13, the condensing component 16 being configured to shield the throughhole 110 c so as to condense a gas flowing into the inside of the case11 through the through hole 110 c; and

330, accommodating the plurality of battery cells 20 in the case 11.

FIG. 14 shows a schematic block diagram of a device 400 for producing abattery according to an embodiment of the present application. As shownin FIG. 14, the device 400 for producing the battery may include: aprovision module 410 and an installation module 420.

The provision module 410 is configured to: provide a plurality ofbattery cells 20; provide a case 11, the case 11 including: a thermalmanagement component 13 configured to adjust temperature of the batterycell 20 accommodated in the case 11; a first wall 110 provided with athrough hole 110 c, the through hole 110 c being configured tocommunicate a gas inside and outside the case 11; and a condensingcomponent 16 attached to the thermal management component 13, thecondensing component 16 being configured to shield the through hole 110c so as to condense a gas flowing into the inside of the case 11 throughthe through hole 110 c.

The installation module 420 is configured to accommodate the pluralityof battery cells 20 in the case 11.

Finally, it should be noted that the above embodiments are merely usedfor illustrating rather than limiting the technical solutions of thepresent application. Although the present application is illustrated indetail with reference to the foregoing embodiments, those of ordinaryskill in the art should understand that they can still modify thetechnical solutions described in each of the foregoing embodiments, ormake equivalent substitutions to some of technical features therein, butthese modifications or substitutions do not make the nature of therespective technical solutions depart from the spirit and scope of thetechnical solutions of the embodiments of the present application.

What is claimed is:
 1. A case for a battery, comprising: a thermalmanagement component configured to adjust temperature of a battery cellaccommodated in the case; a first wall provided with a through hole, thethrough hole being configured to communicate a gas inside and outsidethe case; and a condensing component attached to the thermal managementcomponent, the condensing component being configured to shield thethrough hole so as to condense a gas flowing into the inside of the casethrough the through hole.
 2. The case according to claim 1, wherein thecondensing component is disposed on an inner surface of the case.
 3. Thecase according to claim 2, wherein the thermal management componentintersects with the first wall, a first portion of the condensingcomponent extends along the thermal management component to be attachedto the thermal management component, and a second portion of thecondensing component extends along the first wall to shield the throughhole.
 4. The case according to claim 2, wherein the condensing componentcomprises a cover-like structure, and the cover-like structure shieldsthe through hole.
 5. The case according to claim 4, wherein thecover-like structure is attached to a region of the first wall aroundthe through hole, and has a first opening for the gas to flow into thecase.
 6. The case according to claim 5, wherein the first opening isdisposed in a first direction of the cover-like structure, and the firstdirection is an opposite direction of a gravity direction.
 7. The caseaccording to claim 5, wherein the first opening corresponds to aconnection of a pipeline of a fire-fighting system in the case, and thefirst opening is further configured to collect a fluid leaked at theconnection when the fluid is leaked at the connection.
 8. The caseaccording to claim 4, wherein the condensing component further comprisesa flow channel, and the flow channel is configured to guide condensatein the cover-like structure to the thermal management component.
 9. Thecase according to claim 8, wherein portions of the condensing componenton both sides of the flow channel are attached to the thermal managementcomponent or the first wall.
 10. The case according to claim 8, whereinthe cover-like structure has a second opening corresponding to the flowchannel, and the second opening is configured to guide the condensate inthe cover-like structure to the flow channel.
 11. The case according toclaim 10, wherein the second opening is disposed in a second directionof the cover-like structure, and the second direction is a gravitydirection.
 12. The case according to claim 8, wherein a one-way gravityvalve is disposed on the thermal management component, and the one-waygravity valve is configured to discharge the condensate in the flowchannel from the case when the gravity of the condensate in the flowchannel reaches a threshold.
 13. The case according to claim 1, whereinthe case further comprises: a pressure balancing mechanism configured tobalance pressure inside and outside the case.
 14. The case according toclaim 13, wherein the first wall comprises a first sub-wall and a secondsub-wall, wherein a cavity is formed between the first sub-wall and thesecond sub-wall, the first sub-wall is an inner wall of the case, thesecond sub-wall is an outer wall of the case, and the through hole isdisposed on the first sub-wall, wherein the pressure balancing mechanismis disposed on the second sub-wall, and a gas flowing into the cavityfrom the outside of the case through the pressure balancing mechanismflows into the inside of the case through the through hole, wherein thefirst wall is configured to condense the gas flowing into the cavitythrough the pressure balancing mechanism in the cavity.
 15. The caseaccording to claim 14, wherein an axis of the through hole does notoverlap with an axis of the pressure balancing mechanism.
 16. The caseaccording to claim 15, wherein an orthographic projection of the throughhole on the second sub-wall does not overlap with the pressure balancingmechanism.
 17. The case according to claim 14, wherein a fin is disposedin the cavity, and the fin is configured to condense the gas flowinginto the cavity through the pressure balancing mechanism.
 18. The caseaccording to claim 17, wherein the fin is disposed in a gas channel fromthe pressure balancing mechanism to the through hole, wherein the fin isfixed on the first sub-wall, wherein the fin is parallel to a connectingline from a center of the pressure balancing mechanism to a center ofthe through hole.
 19. A battery, wherein comprising: a plurality ofbattery cells; and a case, wherein the plurality of battery cells areaccommodated in the case, and the case comprising: a thermal managementcomponent configured to adjust temperature of a battery cellaccommodated in the case; a first wall provided with a through hole, thethrough hole being configured to communicate a gas inside and outsidethe case; and a condensing component attached to the thermal managementcomponent, the condensing component being configured to shield thethrough hole so as to condense a gas flowing into the inside of the casethrough the through hole.
 20. A power consumption device, whereincomprising: a battery, wherein the battery comprising: a plurality ofbattery cells; and a case wherein the plurality of battery cells areaccommodated in the case, and the case comprising: a thermal managementcomponent configured to adjust temperature of a battery cellaccommodated in the case; a first wall provided with a through hole, thethrough hole being configured to communicate a gas inside and outsidethe case; and a condensing component attached to the thermal managementcomponent, the condensing component being configured to shield thethrough hole so as to condense a gas flowing into the inside of the casethrough the through hole.